Crystal-size dependence of the spark-plasma-sintering kinetics of ZrB2 ultra-high-temperature ceramics
Crystal-size dependence of the spark-plasma-sintering kinetics of ZrB2 ultra-high-temperature ceramics
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DOI：
10.1016/j.jeurceramsoc.2011.08.027
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发表时间：
2012-02
影响因子：
5.7
通讯作者：
Victor Zamora;A. L. Ortiz;F. Guiberteau;M. Nygren
中科院分区：
文献类型：
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作者：
Victor Zamora;A. L. Ortiz;F. Guiberteau;M. Nygren
研究了ZrB2超高温陶瓷放电等离子烧结（SPS）动力学与晶粒尺寸的关系。有人发现，细化的起始粉末增强SPS动力学，降低烧结的起始温度和中间和最终烧结制度，以及促进在较低温度下的更大的最大收缩率。这种增强仅与晶体尺寸减小到纳米级有关。最后，讨论了对ZrB2超高温超导体低温烧结的影响。
The crystal-size dependence of the spark-plasma-sintering (SPS) kinetics of ZrB2 ultra-high-temperature ceramics (UHTCs) was investigated. It was found that refining the starting powder enhances the SPS kinetics, reducing the onset temperatures of sintering and of the intermediate and final sintering regimes, as well as promoting a greater maximum shrinkage rate at lower temperatures. This enhancement was only relevant with reduction in crystal size to the nanoscale. Finally, the implications for low-temperature sintering of ZrB2 UHTCs are discussed.